Study of dynamic process of domain change in the stepped giant magnetoimpedance element

T. Nakai, K. Takada, K. Ishiyama

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

A giant magnetoimpedance (GMI) element with stepped impedance property was reported for rectangular amorphous soft magnetic thin film with an in-plane uniaxial easy axis in a controlled direction. This stepped change of impedance occurs simultaneously with a change in a magnetic domain, and its physical basis was explained as the intersection of the level of magnetic energy in each case of these domain structures. In this paper, an induced pulse-voltage caused by a non-linear leap of magnetization in the domain change is studied, for the purpose of making dynamics of the domain change clear. We report the results of detecting a pulse signal by using a planar coil fabricated with the stepped GMI element. Some fundamental properties of the pulse signal are also reported, such as its form, and variations in its height as a function of the frequency of the external magnetic field. As a result we found that the domain change in the stepped GMI element is a kind of Barkhausen jump.

Original languageEnglish
Article number042019
JournalJournal of Physics: Conference Series
Volume200
Issue numberSECTION 4
DOIs
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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